package com.black.cat.jvm;

import java.io.IOException;

/**
 * @Author blackcat
 * @create 2021/8/11 15:12
 * @version: 1.0
 * @description:测试类
 */
public class MainTest {

//    public static final boolean FLAG = true;
//    public static final byte BYTE = 123;
//    public static final char X = 'X';
//    public static final short SHORT = 12345;
//    public static final int INT = 123456789;
//    public static final long LONG = 12345678901L;
//    public static final float PI = 3.14f;
//    public static final double E = 2.71828;

    public static void main(String[] args) throws IOException {
        System.out.println("Hello World");
//        main2(args);

//        int sum = 0;
//        for (int i = 1; i <= 10; i++) {
//            sum += i;
//        }
//        System.out.println(sum);
    }
//
//    public static float main2(String[] args) {
//        float pi = 3.14F;
//        float r = 5.4F;
//        float area = 2 * pi * r;
//        return area;
//    }
}
